×

LOCAL POSITIONING APPARTUS, AND METHOD THEREFOR

  • US 20020031242A1
  • Filed: 12/21/1998
  • Published: 03/14/2002
  • Est. Priority Date: 08/28/1996
  • Status: Active Grant
First Claim
Patent Images

1. A local positioning apparatus for detecting a local position of a subject capable of advancing in a direction relating to a lane in a local area based on a digital image signal representing a local image of an area in an advancing direction of said subject, said apparatus comprising:

  • a first image signal generating means for extracting a high spatial frequency component from the digital image signal, and producing an edge signal;

    a contour extraction means for extracting a contour of a lane based on the edge signal, and generating road contour data;

    a second image signal generating means for extracting a low spatial frequency component from the digital image signal, and producing a luminance signal;

    a lane area extraction means for extracting the lane area based on the luminance signal and generating road region data; and

    a lane detection means for detecting the lane position based on the lane contour data and road region data, and producing a lane detection signal.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×